Problem

You get a runtime error on mobile with an error message from Business Central.

or

You experience bad performance

Checklist

Step 1: Is it a known error message?

See Error Messages

Step 2: Inspect the Callstack and "Mobile Document Queue"

See View Request and Response XML and Error Call Stack

The callstack points to the code where the Error happens.

This code is not necessarily the source of the error - but it is still valuable information that we need to know.

The call stack is included in the XML Response. 

Note: Tasklet support might also be able to see a limited Callstack using "Telemetry".

Step 3: Has the system been updated lately?

• Have you changed setups?
• Have you changed any extension code?
  
  
• Has Mobile WMS extension been updated?
  • Has the area been changed in recent releases? See Release Notes (Business Central)
    
    
• Has Business Central been updated?
  • Search BC Release Notes for the error message 

Step 4.1: Identify and Uninstall third-party extensions including Partner customization

Partners extend Mobile WMS with their code. Do you have other extensions installed?

Try uninstalling them temporarily.

Consider doing this in a sandbox (step 6) to avoid disrupting the business.

• Go to: Extension Management
• Select an extension
• Select the three dots
• Select Uninstall
• Does the issue change?

Step 4.2: Use "Code Coverage" to identify Partner customization

Go to the "Code Coverage" -page.

1. Select "Start"
2. Provoke the Error/Issue
3. Select "Stop"
4. Inspect the result for non-base object IDs e.g. 50100 
   
   Note: Mobile WMS objects are numbered 6181000-6182250, so ignore them

Step 4.3: Use "Event Subscriptions" to identify Partner customization

Go to the "Event Subscriptions" by adding ?page=9510 to your URL.

Example: https://businesscentral.dynamics.com/TenantID/SandboxOrProd/?page=9510

Example with filters: https://businesscentral.dynamics.com/TenantID/SandboxOrProd/?page=9510&filter='Publisher Object ID' IS '6181000..6182250' AND 'Subscriber Codeunit ID' IS '<6181000|>6182250'

Please note that the filtered view displays only subscribers to Mobile WMS events. However, a request may also trigger other partner subscriber functions that are linked to standard Business Central events, such as posting events or database triggers related to standard BC tables.

Step 5: Do you have the correct User Permissions?

See User Permissions (3/10)

Step 6: Is it isolated to one order or any order?

• Is it a single document that cannot be processed?
• Can you reproduce the issue by creating new documents? (Using a sandbox, step 3)

Step 7: Reproduce the issue in a "Sandbox" (copy of the production)

With a sandbox you can:

• Avoid disrupting the customer's business
• Change data to check whether the issue changes
• Disable/Enable extensions and check if issue changes
• Debug code, see /wiki/spaces/TFSK/pages/78950013

Step 8: Troubleshoot perfomance using Profiler

See Performance Profiler (AL Profiler)

Also, when dealing with slow performance on BC Online, consider raising a Support Case with Microsoft, directly from Business Central.

See also